<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
          </el-breadcrumb>
          <!-- 卡片视图 -->
          <el-card>
            <!-- 添加角色按钮区域 -->
            <el-row>
                <el-col>
                    <el-button type="primary">添加角色</el-button>
                </el-col>
            </el-row>
            <!-- 角色列表区域 -->
            <el-table  :data="rolelist" border stripe>
                <!-- 展开列 expand是^图标 -->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom',i1 === 0 ? 'bdtop':'' ,'vcenter']" v-for="(iteml,i1) in scope.row.children" :key="iteml.id[i1]">
                            <!-- 渲染一级权限 -->
                            <el-col :span="5">
                            <el-tag closable @close="removeRightById(scope.row,iteml.id)">{{iteml.authName}}</el-tag>
                            <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!-- 渲染二级和三级 -->
                            <el-col :span="19">
                                 <!-- 通过for循环   嵌套渲染二级权限 -->
                                 <el-row :class="[i2 ===0 ?'' : 'bdtop' ,'vcenter']" v-for="(item2,i2) in iteml.children" :key="item2.id[i2]">
                                    <el-col :span="6">
                                        <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">
                                        <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id[i3]" closable @close="removeRightById(scope.row,item3.id)"> 
                                          {{item3.authName}}
                                        </el-tag>
                                    </el-col>
                                </el-row>
                           </el-col>
                        </el-row>
                        <!-- <pre>
                            {{scope.row}}
                        </pre> -->
                        
                    </template>

                </el-table-column>
                <!-- 索引列 -->
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" @click="showEditDiaLog(scope.row.id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)">删除</el-button>
                        <el-button type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>
          </el-card>
          <!-- 分配权限的对话框 -->
          <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%" @close="setRightDialogClosed">
  <!-- 树形控件 -->
  <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
<!-- 编辑表单 -->
<el-dialog
  title="角色编辑"
  :visible.sync="rolesVisible"
  width="50%" @close="edirDialogClosed">
  <el-form :model="rolesForm" ref="rolesRef" label-width="70px">
    <el-form-item label="角色名称">
      <el-input v-model="rolesForm.roleName" prop="roleName"></el-input>
    </el-form-item>
    <el-form-item label="角色描述">
      <el-input v-model="rolesForm.roleDesc" prop="roleDesc"></el-input>
    </el-form-item>
    </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="rolesVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
</el-dialog>



   
    </div>
</template>

<script>
export default {
    name: 'VueRoles',

    data() {
        return {
            // 所有校色列表数据
            rolelist:[],
            // 控制分配权限对话框的显示与隐藏
            setRightDialogVisible:false,
            // 所有权限的数据
            rightslist:[],
            // 树形控件的属性绑定对象
            treeProps:{
                label:'autName',
                children:'children'
            },
            // 默认选中的节点Id值数组
            defKeys:[],
            //当前即将分配权限的角色id
            roleId:'',
            //编辑内容
            rolesForm:{},
            // 控制角色用户对话框的显示与隐藏
            rolesVisible:false
        }
    },
    // 定义一个生命周期函数
    created(){
         this.getRolesList()
    },

    methods: {
        // 获取所有角色的列表
        async getRolesList(){
          const{data:res} = await this.$http.get('roles')
          if(res.meta.status !==200){
            return this.$message.error('获取角色列表失败')
          }
          this.rolelist = res.data
          console.log(this.rolelist)
        },
        // 根据iD删除对应的权限
        async removeRightById(role,rightId){
            // 弹框提示用户是否要删除
        const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)

        if(confirmResult !=='confirm'){
            return this.$message.info('取消了删除！')
        }
    const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
    if(res.meta.status !==200){
        return this.$message.error('删除权限失败！')
    }
  role.children =res.data
        },
        // 展示分配权限
      async showSetRightDialog(role){
        this.roleId = role.id
            //获取全部权限数据
          const{data:res} =  await this.$http.get('rights/tree')
          if(res.meta.status !==200){
            return this.$message.error('获取权限数据失败！')
           
          }
        //   把获取到的权限数据保存到data中
          this.rightslist = res.data
          console.log(this.rightslist)
// 递归获取三级节点的ID
this.getLeafKeys(role,this.defKeys)

          this.setRightDialogVisible = true
        }, 
        //通过递归的形式,获取角色权限的id,并保存到defKeys数组中
        getLeafKeys(node,arr){
            // 如果当前node节点不包括children属性,则是三级节点
          if(!node.children){
            return arr.push(node.id)
          }
          node.children.forEach(item =>this.getLeafKeys(item,arr))
        },
        // 监听分配权限对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys=[]
        },
        // 点击为角色分配权限
      async  allotRights(){
            const keys = [
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            const idStr = keys.join(',')
         const{data:res} =  await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
         if(res.meta.status!==200){
            return this.$message.error('分配权限失败!')
         }
         this.$message.success('分配权限成功')
         this.getRolesList()
         this.setRightDialogVisible = false
        },
        // 删除按钮设置
       async removeUserById(id){
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if(confirmResult !=='confirm') {
            return this.$message.info('已取消删除')
        }
      const{data:res} = await this.$http.delete('roles/' + id)
      if(res.meta.status !==200){
          return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功!')
    //   刷新用户列表
    this.getUserList()
    },
    // 展示编辑角色的对话框
   async showEditDiaLog(id){
      const {data:res} = await this.$http.put('roles/' + id)
          if(res.meta.status !== 200){
            return this.$message.error('查询用户信息失败')
          }
            this.rolesForm = res.data
            this.rolesVisible = true
    },
     // 监听修改用户对话框的关闭事件
     edirDialogClosed(){
            this.$refs.rolesRef.resetFields()
        },
    // 编辑角色单选框
    editUserInfo(){
      this.$refs.rolesRef.validate(async valid=>{
        if(!valid) return
        // 发起修改用户信息的数据请求
       const {data:res} = await this.$http.put(
        'roles/' +this.rolesForm.id,
        {
          roleName:this.rolesForm.roleName,
          roleDesc:this.rolesForm.roleDesc
        })
        if(res.meta.status !==200){
          return this.$message.error('更新校色信息失败') }
          // 关闭对话框
          this.editDialogVisble = false
          // 刷新数据列表
          this.getUserList()
          // 提示修改成功
          this.$message.success('更新角色信息成功')
      })
    },
        
    },
};
</script>

<style scoped>
.el-tag{
    margin:7px
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items:center;
}
</style>